Question

 What is wrong with this code snippet? Explain why it is wrong. Fix it
    
public abstract class Clock
    {
        public DateTime GetTime() { return DateTime.Now; }
    }
    public abstract class Radio
    {
        public void SetStation(double freq) { }
        public void PlayRadio() { }
    }

    public class AlarmClock : Clock, Radio
    {
        public void SetAlarm(DateTime time) { }
        public void SnoozeAlarm() { }
    }

Answer 1

Error:
public class AlarmClock : Clock, Radio { 
Multiple inheritance is not allowed in C#. So class AlarmClock cannot inherit two classes Clock and Radio. 

Error fixing:

public abstract class Clock { 
public DateTime GetTime() { return DateTime.Now; } 
} 
public abstract class Radio : Clock { 
public void SetStation(double freq) { } public void PlayRadio() { } 
} 

public class AlarmClock :  Radio { 
public void SetAlarm(DateTime time) { } public void SnoozeAlarm() { } }

Used multilevel inheritance above.

Do ask if any doubt.